Sig P320 Compatible Lower Parts Kit for 9/40/357 - Complete LPK

New In Stock and Ready To Ship! Your complete Sig compatible Lower Parts Kit to finish your Sig Sauer P320 or P320 compatible gun frame insert (Fire Control Unit). This complete lower parts kit includes all upgraded pieces along with the necessary slide catch lever kit, slide takedown lever, and upgraded flat trigger. This kit is completely compatible with any upgraded Sig P320 slide in 9mm, .40S&W, and .357 SIG. This kit will not work with the .45 ACP Sig P320 or P320 .45 compatible build as there are a few pieces that are different. This complete lpk has been torture tested with over 5,000 rounds down range and proven to be reliable in any situation. Finished in Black.